| 漆酶/介体体系漂白纸浆的自由基反应机理 |
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| 引用本文： | 喻力,詹怀宇,付时雨,何为.漆酶/介体体系漂白纸浆的自由基反应机理[J].中国造纸学报,2002,17(2):32-36. |
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| 作者姓名： | 喻力 詹怀宇 付时雨 何为 |
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| 作者单位： | 1. 华南理工大学制浆造纸工程国家重点实验室,广州,510640
2. 中国科学院纤维素化学重点实验室,广州,510650 |
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| 基金项目： | 国家自然科学基金 (2 0 1 760 1 5)，教育部博士学科点专项基金 (2 0 0 0 0 0 561 0 1 )资助项目 |
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| 摘 要： | 采用含漆酶/介体体系（LMS）漂段的TCF漂序，在H2O2用量为2%的情况下，将蔗渣硫酸盐浆漂到80.7%ISO的白度。利用电子自旋共振谱（ESR）研究了蔗渣硫酸盐浆在漆酶/介体体系中产生自由基的情况，并与蔗渣硫酸盐浆在漆酶中产生自由基的情况以及仅有漆酶和介体而没有纸浆时产生自由基的情况对比，从而了解漆酶/介体体系漂白纸浆的自由基反应机理。
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| 关 键 词： | 漆酶／介体体系 漂白 纸浆 自由基 反应机理 |
| 文章编号： | 1000-6842(2002)02-0032-05 |
| 修稿时间： | 2002年5月14日 |
Radical Reaction Mechanism of Biobleaching with Laccase/Mediator System |
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| Yu Li,Zhan Huaiyu,Fu Shiyu,He Wei.Radical Reaction Mechanism of Biobleaching with Laccase/Mediator System[J].Transactions of China Pulp and Paper,2002,17(2):32-36. |
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| Authors: | Yu Li Zhan Huaiyu Fu Shiyu He Wei |
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| Affiliation: | Yu Li 1 Zhan Huaiyu 1 Fu Shiyu 2 He Wei 1 |
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| Abstract: | Using TCF bleaching sequence including laccase/mediator system (LMS), bagasse kraft pulp was bleached to a brightness of 80.7%ISO at 2% dosage of H 2O 2. Radicals in the LMS treated pulp, laccase treated pulp and in the reaction liquor were determined respectively by ESR spectroscopy. It was found that there were 2 main radicals formed during LMS and laccase treatment: phenoxy radical and peroxide radical. The amounts of these radicals generated in pulp during LMS and laccase treatment and in the reaction liquor were compared. |
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| Keywords: | laccase/mediator system bleaching radical |
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